K2O2 Wyckoff R W G Crystal Structures 1 (1963) 85-237 Second edition. Interscience Publishers, New York, New York Potassium peroxide _database_code_amcsd 0011667 6.736 7.001 6.479 90 90 90 Cmca atom x y z K .25 .160 .25 O 0 .088 .934